firstly im wondering what people think is the best. then im wondering what the real difference is? how i understand it is the 650nm is a darker red so its not as visible but why do people still want to use it if it isnt going to show up as easily. i know the price is one thing but you could just get a diode with half the power and it would be around the same price.
just bored at home and its got me thinking
ollie